Hoisting machine



July 10,1928.

F. J. LEDERER HOISTING MACHINE Filed March 21, 1927 3 Sheets-Sheet lmrenfisr Jlederer July 1 0, 1928.

' F. J. LEDERER HOISTING MACHINE Filed March 21, 1927 s Sheets-Sheet 2 July 10, 1928.

F. J. LEDERER HOISTING- MACHINE Filed March 21, 1927 5 Sheets-Sheet 5 Patented duly l@, 1928.

siren FEEDEEKQE d. LEDERER, 6F BUWALQ, NEW YORK.

nors'rnve monies.

' Application filed march 23,1325. Serial No. 176,994.

' This invention relates'to a hoisting machine and while it is ca'pableof embodiment in various lifting and jacking machinery it more particularly relates to an elevator or lishments where it is desired tolift boxes, barrels or other packages of merchandise either from a street sub-level to a loading position at the street level, and vice versa,

orfor the stacking or ticring of merchandise or the reaching of previously stacked merchandise.

Various machines have been devised for I the handling of merchandise in difierent frame structure. Another object of the invention is to provide an elevator or lift which may readily,

be installed in a basement or cellar below the sidewalk, the entire structure of whlch will be normally compacted or collapsed beneath the side walk or street level, but which may be extended to a height sufficient for bringing the load-carryingplatform to the level of the floor of wagons, trucks or. other freight vehicles. The invention also resides in the provision of a novel cover 'or closure for the sidewalk opening through which the elevator platform is movable; and also in the provision of a novel cage or screen by which the basement or cellarmay be conveniently ventilated to the exclusion entrances. I

A further object of the invention vis to provide an elevator or hoisting machine having an automatically extensible support or guiding frame structure which will be exof unauthorized tended simultaneously with a. relative elevation of the platform.

A still further object is to provide a novel extensible frame structure in which the units avariety of uses. lift especially adapted for commercial estabor sections will be progressively extended from the lowermost or supporting section and which structure is readily adaptable for The invention also has provide a portable hoisting apparatus in the form of an elevator lift or derrick which may-be moved about at will to the desired location and by which merchandise may be lifted to an elevation considerably above the e5 normally collapsed height of the machine.

for an object to so A still further object of the-invention is to 1 I provide a novel portable supporting base for the elevator structure.

The invention will also be found to reside 7c in the salient features of construction and the novel arrangements and combinations of parts hereinafter described in detail and succinctly set forth in the appended claims, refmgs wherein;

Figure 1 is an elevation of a sidewalk lift or elevator equipped with the cover and guard for the sidewalk opening.

erence being had to the accompanying draw- Figure 2 is a vertical section of the sideso walk elevator or lift with the and guard removed.

Figure 3 is a detailed transverse section through One side of the guiding or support? ing frame 'structm'e.

Figure 4 is a detailed view showing the manner of providing-an antifrietion bearing 'in the extensible frame structure.

Figure 5 is a detailed sectional view about on line 55 of Figure 2.

Figure 6 is an elevation showing -the-eleyator or lift embodied in a portable strucsure. Figure 7 is a similar view through a portmanhole cover able lift construction whereinthe platform has been replaced by a derrick or screen con struction.

Figure 8 is a detailed view of the frontv portion of the portable base'ortruck. f

Figure 9 is a diagrammatic view showing me in partially extended form a plurality of- ;extensible frames.

Figure 10 is a similar view showing the extensible frames in erative relation. y

In carrying the present invention into effeet, I haveshownin Figures 1 and 2 the supporting base 1 of the hoisting apparatus as'being the floor of a basement or cellar extended out beneath the sidewalk, although their collapsed or inop-' l either one of the angle members may be re-.'

moved to facilitate-the positioning and remo val of the extensible frame or section.

- The channels are disposed in direct opposition and each uprlght may be'prov1ded l with an additional uide in the form of an angle-iron 3 for de ning with'one wall of the channel upri ht 2 a guideway forthe ad jacent side mem er 40f an extensible frame generally indicated at 5. Each side frame 4 is also preferably of channeled formation and provided with an' angle-lron 6 similar 'to the angle-iron" 3, for defining with an opposing wall of said side member 4 a guide-' way in which is'vertically slidable a flange 'i', which may. be a part of a side member of another extensible frame 5, such as sche-' 'maticall shown in Figures 9 and 10, al-

though or clearness in illustration only one extensible frame is shown in Figures 1 and 2, and the flange 7 forms a part of a carriage 8 which supports the platform 9. The

carriage'8 has sufiicient bearing in the side member 4 to permit of an easy sliding movement without binding. Obviously, antifrictional devices may be provided to ease the sliding contacts between the extensible elements, such as ball bearin s 7" shown in Figures 3 and 4. These ball bearings may be retained in their pockets in flange 7 by any suitable means such as a retaining plate 7". The uprights 2 may be braced by struts if desired, the braces or reinforcements in 'the present disclosure taking the form of transverse anchor members 10 which, not

vide support for a gear box or transmission housing 11, additional support being provided. for said housing by legs 12. The lower ends of the uprights are braced by a transverse, connecting angle member 13, While the upper ends of said uprights are connected by anangle member 14'. These uprights and braces form a substantial frame w ich constitutes the stationary or guiding ,zsection or unit of the extensible structure. A pulley or sheave 15 is journaled in fixed bearings on thelower member 13 While a pulley 16. is journaled in a yoke or fork 17 which is adjustably connected to the upper member 14 by a bolt or screw 18. Obviously, pulley 15 may also be likewise adjustably mounted. An endless cable or chain 19 takes over these two pulleys 15 and 16 and after assing over guide pulleys 20, preferably ocated on the angle braces 10, one 'flight uides 2 1 although such adjustable mountings been omitted in the present disclosure foronly connect the uprights 2 but also pro 19' thereof takes-about a drive pulley 21 arranged in the gear or: transmission housing 11;

Each extensible ably bracedand provided with transverse upper and lower frame members 22 on which are journaled the upper and lower pulleys 23, either one orboth of which may beadjustably mounted as in the case of pulle 16, ave

frame or section 5 is suitthe sake of'blarity. Over these pulleys 23 takes an endless cable or chain 24 which has one-len h or flight 24 connected at 25 to a fixed racket 25 on the u per member 14 and which has its parallel ength or flight 24 connected at a suitable height to the carriage 8, as indicated at 26. In this conlocated between the slidable flange 7 and the load-sustainin portion of the platform 9 whereby the chain will assume in part, some 'nection it is noted that the bracket 26, or

'the'point of connection with the chain, is 5 ofthe'weight of the load and thereby relieve the flange to that extent, as well as reduce any binding tendency of the flange on its guide walls. The chain 19 has its other flight 19" connected to the adjacent extensible frame by a bracket 27 on the lower transverse frame member 22. Referring partlcularly to Figure 2 it will be observe that any driving of the chain 19 which would tend to lift on the point of connection 27 with the extensible frame 5 would lift the latter, and by reason of the fixed point of connection 25' between the endless chain 24 and the stationary transverse member 14, the point of connection 26 with the carriage 8 would elevate the latter in ite guideway provided in the side members 4. Therefore while the point of connection 26 on the carriage 8 wi 1 move relative to the supporting extensible frame 5 at a speed equal to the -movement of the extensible frame in the guide members 2, the-relative movement between the carriage 8 and the fixed guides 2 will be twice as fast, and in proportion to the number of extensible frames or units 5 the movement of the carriage and platform will becorrespondingly increased. Thus, in an extensible structure such as is dis-, closed in Figures 9 and 10 wherein there are three extensible frames or units and one stationary frame, the movement of the platform will be four times as fast as the relative movement between adjacent frames or sections. Obviously, should the chain .or I

cable 19 become too loose the slack may readily be taken up by the adjustment 17, 18. Manual power may be provided for operating the drive pulley 21, such as is indicated at 28 in Figures 6 and 7, but oftentimes it is desirable to have motive power and or this purpose I have illustrated in Figure 1 an electric motor 29, the same besition beneath the housing 11, and geared to the transmission as by a belt 30,,and pulley 31 (see also Fig. 2). The shaft of this driven 1 pul ey 31 extends into the transmission housing and carries a gear 32 which is in mesh with a gear 33 fixed on a countersh'aft 34. Slidable on this countershaft is agear unit the gear 35 of which may be meshed with a gear 36 for forward or up? driving, and the gear 37 of which may be meshed with revers-- mg gears 38 for reverse or down driving, whereby the shaft 39 which supports gear 36 and one of the gears 38 mayberotated inv either forward or reverse directions. The shaft 39 is also equipped with a worm 40in mesh with a worm gear 41, (see Fig. 5) which worm and gear constitute an irreversible drive whereby the platform will be locked in any position against unauthorized retrograde movement. The worm wheel 41 may be connected and disconnected from the drive pulley 21 by a-clutch, 42 and lever 43 for effecting a rapid descent of the platform. Under normal conditions the platform is operated by power both for raising and lowering, the gears 35 and 37 being slidable on their shaft 34 by an arm 44 (Fig. 1) which is in turn connected -.to a bell crank lever 45, and this bell crank lever is connected to an endless member 46 whichis always accessible to anyone on the platform 9 by means of 'the flexible members 47 and 47'; i The flexible member 47 is of such length as to automovement of the platform, up or down, in bringing the gears 35 and 37 into neutral position and thereby automatically stop the machine. The two flexible members 47 and 47' provide means to move the endless member 46 in either direction from any position of the platform. f

Slidably mounted in the carriage guideway of the side members 4 are standards 48 -which rest upon the top of carriage 8 and which in turn support a cover'49 for seating on the coping or sill 50 about the sidewalk opening 51 for closing said opening. Additional supporting means in the form of a post 49 may be provided when desired. After the cover seats on the sill 50, the platform 9 may be lowered'to the basement floor orinto a pit provided therein for such purpose, such as is indicated at 52. On the underside of the cover 49 is provided a screen skirt 53 of ashape substantially conforming to the sidewalk opening 51, and when it'is desired to ventilate the basement or elevator shaft, the carriage will be elevated suflicientalso be elevated, whichcover may be permanently connected. to the carriage, if desired.

By reason of' the extensible supporting frame structure for the platform it is possible to raise the platform substantially to the top of the uppermost extensible frame or section.

In Fig. 1 is diagrammatically shown at-54 the rear portion of a truck or wagon backed up against the curb, and illus trating an advantage of the improved elevator or lift in that the platform may be elevated to the level of the floor of the truck or wagon for readily sliding any large pack-- I ages or merchandise from or to the platform as will be very obvious.

'In lieu of having the base 1 permanent or stationary it may be of a portable nature such as is indicated at 55 (Fig. 7) wherein the base constitutes the body of a wheeled.

truck jack or linesmans platform, the rear wheels 56 being suitably journaled to the rear end of the truck body while the front wheels are adjustable for lowering the front end of the truck body into engagement with the ground or floor and thereby secure the supporting base against movement. The truck body may be made of suitable angle iron or preformed frame members and is preferably provided witha transversefloorengaging member 57 which is raised and lowered from and to the floor by the proper mainipulation of the front wheels. Overhanging the front edge of the truck body is the bracket 58, to which is swiveled a fork 59, the latter supporting on a horizontal pivot a bell crank lever 60. On one arm of the bell crank lever is mounted a pair of wheels or casters 61 and on the opposite arm of the bell crank is pivoted a handle 62 (Fig. 6) which has spaced stops 63 and'64 which are adapted to engagethe opposite sides of the adjacent bell crank lever arm for swinging the bell crank lever about its horizontal pivot. By swinging the handle 62 back over the body of the truck. as in Figures 6 and 7, the caster wheels 61 will be swung forwardly so as to drop the frame member 57 down onto the floor, and bv swinging the handle for wardly, as in Figure 8, the stop 63 willengage the adjacent arm of the bell crank lever 'and cam the wheels 61 rearwardly to lift the forward end of the truck body. the rearward pos'it-ion of the wheels 61 being determined by a pair of lugs 65 respectively rovided on the bell crank lever and the fork 59.

The elevator or lift in the portable style of hoisting machine is substantially the same as that shown and described in Figurcs'l and 2, with the exception that man ial power is provided instead of motive power. By reason of its portable nature this latter form of elevator or hoisting machine may be carted about from place to place in acommercial establishment, and by reason of its compactncss, when in its lowered or inoperative position, it be moved through low doorways or archeswithout disrupting or tearingdown either the hoisting machine or the building structure.

, In lieu of the platform 9, the carriage 8 may beflprovided Witha derrick'orcrane-like arm, 66 having guiding pulleys or sheaves 67 overwhich mavtake a cable 68, one endv of which is suitably anchored to a fixed part onthestationary frame structure as indicated at 69, and the opposite or free end of which isprovidcd with a hook'or other suitable load-supporting means. 70. Such construction permits of the rapid liftingofthe hook 70 when the supporting frame structure is extended,and may be embodied in such hoisting apparatus as wrecking cars.

. In aportable'structure such as is shown in Fig. 6 the lift/may be moved about from place. to place, through narrow and low. pas sages and then be extended to its full height,

' ifdesired, so that any person onthe platform mayreach a very high ceiling or a very high shelf; The extensible frame structure such as is shown in Figs. 9 and 10 1s readily adapted to a variety of uses. such as an extensible ladder, scaffold, or truck dump body, and by reason of the progressively increased speed of the uppermost extensible frame or unit, any

person standing on said frame or unit in a- I; claim .1.'.A hoisting machine comprising spaced uprights, an endless member .supported thereby, an extensible frame telescopically related to the uprights andconnected at its lower portion to said endless'mcmber, a second endless member supported by said extensible frame and having oneflight connected to a fixed 'part ofsaid upright-s,- and a carriage vertically 'slidable in said extensible frame and connected to the opposite flight of said second endless member.

2. An extensible structure of the class described comprising a stationary frame, an extensible frame slidably connected therewith,

an endless member for each frame supported by pulleys thereon, the endless member of .the stationary-frame. being connected to the lower portion of said extensible frame and one flight of the endless member of said ex.- tensible frame being connected to a fixed part of'saidstationary frame, and a member slidably connected to the extensible frame able member.

and connected to the opposite flight of the extensible frame being connected to a fixedpart of said stationary frame, a member slidably related to the extensible frame and connected to the opposite flight of its endless member, and a platform carried by said-slid- 4. An extensible structure of scribedcomprlsing a stationary frame, and an the class 'deextensible frame slidably connected there- I with,an endless member for each frame sup ported by pulleys thereon, the endless mom bcrof the stationary frame being connected to the lower portion of said extensible frame and one flight of the endless member of said extensible frame being connected to a fixed part of said stationary frame, a member slidably r:lated to the extensible frame and connected to the opposite flight of its endless member, a platform carried by said slidable member, and means for driving-the endless member'of said stationary frame.

5. An elevator comprising a stationary frame, an extensible frame slidably connected therewith, pulleys on each frame, an endless member for each frame taking over the respective pulleys thereof, the endless member of the stationary frame being connected to the lower part of the extensible frame, and the endless member of the extensible frame having one flight connected to a fixed part of the stationary frame, and a platform slidably related to the extensible frame and fixedly connected to the opposite flight of its endless member. a

6. An elevator comprising a stationary frame, an extensible frame slidably connectedtherewith, pulleys on eachv frame, an end-- less member for each frame takin over the respective pulleys thereof, the on less member of the stationary frame being connected to the lower part of the extensible frame,

and the endless member of the extensible.

frame having one flight connected to afixed part of the stationary frame, a platform .shdably connected to the extensible frame and fixedly connected to the opposite'fli ht of the endless member of said extensi 1e frame, and power operated transmission means for driving the endless member of the stationary frame selectively in opposite directions.

7. An elevator comprising a stationary frame, an extensible frame slidably connected therewith, pulleys on each frame, an endless member for each frame taking over the frame, an extensible frame slidably connected therewith, pulleys on each frame, an endless member for each frame taking over the respective pulleys thereof, the endless member of the stationary frame being connected to the lower part of the extensible frame, and the endless member of the extensible frame having one flight connected to a fixed part of the stationary frame, a platform slidably connected to the extensible frame and fixedly connected to the opposite flight of the endless member of said extensible frame, and a closure member slidably connected to the extensible frame and operable bythe platform, said closure being adapted for closing an opening in a sidewalk or floor through which the platform is movable.

9. An elevator comprising a stationary frame, an extensible frame slidably connect ed therewith, pulleys on each frame, an endless member for each frame taking over the respective pulleys thereof, the endless member of the stationary frame being connected to the lower part of the extensible frame, and the endless member of the extensible frame having one flight connected to a fixed part of the stationary frame, a platform slidably connected to the extensible frame and fixedly connected to the opposite flight of the endless member of said extensible frame, a closure member for an opening in a wall through which the platform is move able, said closure member being operably connected to the platform, and a skirt depending from the platform. l

10. An elevator comprising an upright stationary frame, an extensible frame slidably connected to the stationary frame, an

endless drive member vertically arranged on the stationary frame and connected to the extensible frame, a driven endless member.

vertically arranged .on the extensible frame and having one flight connected to the stationary frame, anda load supporting means slidably connected to the extensible .frame and secured to the opposite flight of said driven endless member.

11. A hoisting machine comprising aan frame including a' supporting base an upright guide frame having an extensible frame slidably connected to the guide for up and down movement, a load-c'arrymg plat-.

form slidably connected to the extensible frame for relative up and down movement,

an endless driving member supportedon the' upright guide-frame and having one flight connected to the extensible frame for operating the same, a driven endless member supported on the extensible frame and having one flight connected to the upright guide frameand its opposite flight connected to the load-carrying platform at a point between its slidable connection with said extensible frame and its load supporting portion, and means for driving the first endless member. I I I 12. A hoisting machine. comprising a frame including a supporting base and an upright guide frame having an extensible frame slidably connected to the guide for up and down movement, a load-carrying platform slidably connected to the extensible frame for relative up and down movement, an endless driving membersupported on the upright guide frameand having one flight connected to the extensible frame for operating the same, a driven endless member supported on the extensible frame andhaving one flight connected to the upright guide frame and its opposite flight connected to the load-carrying platform, and power operated transmission means for driving the first endless member, said transmission means ineluding an irreversible worm and gear whereby the load-carrying platform will be unauthorized movement.

13. A hoisting machine comprising a 'frame including a supporting base and an uprightguidc frame havin an extensible frame slidably connected to t e guide for up and down movement, a load-carrying platform slidably connected to the extensible frame for relative up and down movement, an endless driving member'supported on the upright guide frame and having one flight connected to the extensible frame for operatlocked in any and all of its positions against member which includes forward'and reverse gearing, and control means for the reversible gearing accessible from the platform in all' positions of the same; i

14. A hoisting machine comprising an Endless member taking over said pulleys and e one flight to the upper portion of said guide frame, a load-carrying platform connected to' the upper flight and slidably connected to theextensible frame for movement coextensive of the same and means for sliding the extensibleframe in said guide frame a distance substantially equal to the right guide frame, anextensible frame slid- 'ablyfconnected thereto for up and down" movement, spaced pulleys arranged at the .-top. and bottom of the extensible frame, an

fining spaced flights, means connecting" frame slidably connected to the guide for up and down movement, a load-carrying platform slidably connected to the extensible frame for relative up and down movement, an endless driving member supported on the upright guide frame and having one flight connected to the extensible frame for operating the same, a driven endless member supported on the extensible frame and having one flight connected to the upright guide frame and its opposite flight connected to the load-carrying platform, and power operated transmission means for driving .the first endless member, said transmission means including an irreversible worm and gear whereby the load-carrying platform will be locked in any and all of its positions against movement, and means located between vsaid irreversible Worm and gear'and said first endless member for disconnecting 'fram'e, ymeans for lifting :said extensible frame slidably connected toqthe upright frame for up and down movement, :a platform slidably connected to the extensible frame on saidu'pright frame, and :means for lifting said platform pn and relative to said extensible frame by and during movement of said first means.

17. A hoisting machine comprising a frame including a supporting base and an upright guide frame, :an extensible Ifm-me movable up and down on the guide frame, :a load-carrying member supported lqysaid extensible frame for relative up and down movement, a pulley on the upper port-ion e f the extensible frame, 'a flexible member connected .to the load carryng member :and taking over the pulley to a fixed anchor on said guide frame, and a pulley-supported, z-fiexible driving member on said (guide frame an'd connectedito the extensible frame forklifting the latter.

FREDERICK J. 'LEDERER. 

